All it takes is a willingness to learn....
He says he thought it would be an easy assignment, but it took him three months of research, experimentation, and sifting through false claims.
As a newcomer to all of this, it is that complexity that makes the experimentation fun but also intimidating. Even in the suggestions above, which are all very much appreciated, there is the caveat that the experts here use different finishes for different purposes and that one has to be extremely careful when buying ingredients or commercial concoctions.
In my opinion, that is the appeal of a well-advertised bottle of something someone else has made.
For me, the learning is much of the enjoyment, even if I will never be a professional or expert.
Thanks to all of you for sharing your knowledge.